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COMMENT ON PSS Restart Hall B System A PLC
COMMENT ON PSS Restart Hall B System A PLC
COMMENT ON Replace Lambertson Viewer
COMMENT ON 2L02-4 2.5W Amp Replacement
COMMENT ON MXS3S02 Vacuum Leak Repair
APPROVED Power down North and South Linac and W1 Service Building Trim Racks and Restore them when Magnet work is completed.
COMMENT ON Power down North and South Linac and W1 Service Building Trim Racks and Restore them when Magnet work is completed.
COMPLETED IHA0I02 HARP - visual inspection of wire
FSD trips this run
Log Number: 4270868Logbook(s): Entry Makers: beneschBody:
Relatively large number of BLA/BCM trips. Spreadsheets attached for anyone else interested. The only thing that stands out to me is the addition of the Hall C BCM to all the faults on Feb. 5. Prior to that it wasn't present. This is most easily seen in the unexploded csv file. Looking at Figures 3-5 with the integrated loss signal in the lower panel, reducing the integrated loss trip point from 15000 to 1500 seems in order. If this had been the case and we were monitoring this routinely, we would have started looking for the source a day before the vacuum event.